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Constants of diatomic molecules

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Klaus P. Huber and Gerhard H. Herzberg

Data collected through July, 1977

Symbols used in the table of constants
State electronic state and / or symmetry symbol
Te minimum electronic energy (cm-1)
ωe vibrational constant – first term (cm-1)
ωexe vibrational constant – second term (cm-1)
ωeye vibrational constant – third term (cm-1)
Be rotational constant in equilibrium position (cm-1)
αe rotational constant – first term (cm-1)
γe rotation-vibration interaction constant (cm-1)
De centrifugal distortion constant (cm-1)
βe rotational constant – first term, centrifugal force (cm-1)
re internuclear distance (Å)
Trans. observed transition(s) corresponding to electronic state
ν00 position of 0-0 band (units noted in table)
Diatomic constants for 121Sb19F
C3 1 44756.7 [696.27] Z 3.0 H  0.2983 1 0.0029  (2.2E-7)  1.8553 C3 rarrow b V 31148.9 Z
missing citation
           C3 rarrow a V 37983.53 Z
Howell and Rochester, 1939; missing citation
           C3 lrarrow X1 V 44802.6 Z
Howell and Rochester, 1939; Patel and Abraham, 1969; missing citation
C2 44310.4 700.9 H 2.80        C2 rarrow X2 V 43558.2 H
Howell and Rochester, 1939; Patel and Abraham, 1969
A3 1 28706.6 411.1 Z 1.67  0.2414 0.00170  (3.3E-7)  2.0624 A3 rarrow b R (14953.8) 2 (Z)
missing citation
           A3 rarrow a R (21788.3) 2 (Z)
missing citation; missing citation
           A3 rarrow X2 R (27809.7) 2 (Z)
Howell and Rochester, 1939; missing citation
A2 2 24788.4 420.3 Z 1.71  0.2411 0.00165  (3.2E-7)  2.0636 A2 rarrow a R (17874.6) 3 (Z)
missing citation
           A2 rarrow X2 R (23896.1) 3 (Z)
missing citation; missing citation
A1 22589.4 418.9 H 2.64        A1 rarrow X1 R 22493.7 H
missing citation
A 0+ 21407.5 416 H 2.1  [0.23853]   [3.22E-7]  [2.0747] A rarrow X2 R (20513.0) 4 (Z)
Chakravorty, Abraham, et al., 1973; missing citation
           A rarrow X1 5 R 21311
Vasudev and Jones, 1976
b 1Sigma+ 13651.1 615.5 H 2.8  0.2815 0.0025  (2.4E-7)  1.9098 b rarrow X2 12856.15 Z
missing citation
           b rarrow X1 13653.68 Z
missing citation
a 1Delta 6816.0 616.3 Z 2.70  0.2806 0.00187  (2.3E-7)  1.9129  
X2 (3Sigma-) 1 796.3 612.6 H 2.61  0.2805 6 0.0020  (2.4E-7)  1.9132  
X1 (3Sigma-) 0+ 0 [605.0] Z 2.62 H  0.2792 0.0020  (2.3E-7)  1.9177~  


1Omega-type doubling Delta vef(v=0) = (+)8.9E-5J(J+1). The rotational analyses by Abraham and Patel, 1970 and Abraham and Patel, 1971 are in disagreement with Prevot, Colin, et al., 1975.
2Extrapolations from v'-0 bands having v'geq 2.
3Extrapolations from v'-0 (A2 rarrow X2) and 0-v" (A2 rarrow a) bands having v' geq 1 and v" geq 2, respectively.
4Extrapolated from the 0-2 band, the only rotationally analysed band. The lower-state vibrational numbering of Chakravorty, Abraham, et al., 1973 has been increased by 1 Vasudev and Jones, 1976.
5Band heads observed, but no details given Vasudev and Jones, 1976.
6Omega-type doubling Delta vef(v=0) = +0.00031J(J+l) Vasudev and Jones, 1976.


Go To: Top, Constants of diatomic molecules, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Howell and Rochester, 1939
Howell, H.G.; Rochester, G.D., The band spectrum of antimony fluoride (SbF), Proc. Phys. Soc. London, 1939, 51, 329. [all data]

Patel and Abraham, 1969
Patel, M.M.; Abraham, K.C., Vibrational analysis of ultraviolet bands of SbF, Indian J. Pure Appl. Phys., 1969, 7, 641. [all data]

Chakravorty, Abraham, et al., 1973
Chakravorty, M.; Abraham, K.C.; Patel, M.M., On the emission spectrum of molecular SbF, J. Phys. B:, 1973, 6, 757. [all data]

Vasudev and Jones, 1976
Vasudev, R.; Jones, W.E., The near-ultraviolet and visible bands of antimony monofluoride, J. Mol. Spectrosc., 1976, 59, 442. [all data]

Abraham and Patel, 1970
Abraham, K.C.; Patel, M.M., Rotational analysis of C3 system of the SbF molecule, J. Phys. B:, 1970, 3, 1183. [all data]

Abraham and Patel, 1971
Abraham, K.C.; Patel, M.M., Fine structure analysis of the C1 system («lambda»2600-«lambda»2700 Å) of the SbF molecule, J. Phys. B:, 1971, 4, 1398. [all data]

Prevot, Colin, et al., 1975
Prevot, F.; Colin, R.; Jones, W.E., Rotational analysis of the ultraviolet bands of the antimony monofluoride molecule, J. Mol. Spectrosc., 1975, 56, 432. [all data]


Go To: Top, Constants of diatomic molecules, References